wasm: Fix source code comment typos

Change-Id: I9b2b76c01880c7bb515fdc1a6c4ef1f0bcf6be95
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>

src/plugins/platforms/wasm/qtloader.js

@@ -68,7 +68,7 @@
 //
 //  containerElements : [container-element, ...]
 //      One or more HTML elements. QtLoader will display loader elements
-//      on these while loading the applicaton, and replace the loader with a
+//      on these while loading the application, and replace the loader with a
 //      canvas on load complete.
 //  canvasElements : [canvas-element, ...]
 //      One or more canvas elements.
@@ -280,7 +280,7 @@ function QtLoader(config)
     function fetchThenCompileWasm(response) {
         return response.arrayBuffer().then(function(data) {
             self.loaderSubState = "Compiling";
-            setStatus("Loading") // trigger loaderSubState udpate
+            setStatus("Loading") // trigger loaderSubState update
             return WebAssembly.compile(data);
         });
     }

src/plugins/platforms/wasm/qwasmcompositor.cpp

@@ -146,7 +146,7 @@ void QWasmCompositor::setVisible(QWasmWindow *window, bool visible)
     if (visible)
         compositedWindow.damage = compositedWindow.window->geometry();
     else
-        m_globalDamage = compositedWindow.window->geometry(); // repaint previosly covered area.
+        m_globalDamage = compositedWindow.window->geometry(); // repaint previously covered area.
 
     requestRedraw();
 }
@@ -172,7 +172,7 @@ void QWasmCompositor::lower(QWasmWindow *window)
     m_windowStack.removeAll(window);
     m_windowStack.prepend(window);
     QWasmCompositedWindow &compositedWindow = m_compositedWindows[window];
-    m_globalDamage = compositedWindow.window->geometry(); // repaint previosly covered area.
+    m_globalDamage = compositedWindow.window->geometry(); // repaint previously covered area.
 
     notifyTopWindowChanged(window);
 }

src/plugins/platforms/wasm/qwasmeventdispatcher.cpp

@@ -148,7 +148,7 @@ void QWasmEventDispatcher::doMaintainTimers()
 {
     Q_D(QWasmEventDispatcher);
 
-    // This functon schedules native timers in order to wake up to
+    // This function schedules native timers in order to wake up to
     // process events and activate Qt timers. This is done using the
     // emscripten_async_call() API which schedules a new timer.
     // There is unfortunately no way to cancel or update a current

src/plugins/platforms/wasm/qwasmintegration.cpp

@@ -146,7 +146,7 @@ QWasmIntegration::QWasmIntegration()
 
 QWasmIntegration::~QWasmIntegration()
 {
-    // Remove event listenes
+    // Remove event listener
     emscripten_set_resize_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, nullptr, EM_TRUE, nullptr);
     emscripten::val visualViewport = emscripten::val::global("window")["visualViewport"];
     if (!visualViewport.isUndefined()) {